Photo-lltmo



(No Model.) 2 Sheets-Sheeti.

LEAKER. STATIONARY BOILER. No. 579,784. Patented Mar. 30, 1897.

2 Sh eets-Sheet 2.

(No Model.)

L. BAKER. STATIONARY BOILER.

Patented Mar. 30, 1897.

FFICE.

Nrrn STATES PATENT LUDWIG BAKER, OF EAST SAGINAWV, MICHIGAN, ASSIGNOR TO THE XVICKES BROTHERS, OF SAME PLACE.

STATIONARY BOILER.

SPECIFICATION forming part of Letters Patent No. 579,784, dated March 30, 1897.

Application filed April 20, 1896. Serial No, 588,223. (No model.)

To all whom it may concern; vided with a cap or cover 1?. Suitable stays Be it known that I, LUDWIG BAKER, of East 13 are also employed connecting the plates 6 Saginaw, Michigan, have invented certain and 8. The rear header is composed of a new and useful Improvements in Steam-Boilflanged plate 14, a dished plate 15, and the ers, of which the following is a specification. overlap or shell 16, the dished plate 15 being 5 5 This invention relates to improvements in provided with manhole l7 and the shell 16 stationary boilers; and the object of the inbeing provided with flange for blow-off 18. vention is to provide a boiler in which a rapid The water-space of the rear header is concirculation may be effected and maintained, nected with the interior of the drum by means 10 in which an effective separation of the steam of the neck 19. 60 and water may be made, and which is of such It will be observed that the headers are of construction as to afford ready means for unequal capacity, the front header having a cleaning. water-space of much less transverse diameter To this end my invention consists ina boiler or depth than that of the rear header. As a having in combination and substantially as result a large volume of Water is maintained 65 hereinafter described a steam and water at all times in the rear header and an adedrum, front and back headers communicatquate supply of water is maintained in the ing with the drum, and tubes connecting tubes 9. The smaller volume of Water in the said headers, the front header being of less front header offers but little resistance to the relative capacity than the backheader, wherepassage of steam from the tubes to the drum, 70 by a relatively smaller body of Water is main-' and a more rapid circulation and a better septained in the front header than in the back aration are thereby effected. This will be unheader and a better circulation and separaderstood when it is considered that the body tion of steam from the Water and a sufficient of water in the front header acts as a resist- Water-supply for all tubes are maintained. ance to the passage of the steam from the 75 Figure 1 is an elevation, sectional, through tubes to the drum and that the thinner this the drum, the headers, and the necks conbody of water is the less pressure is exerted necting them with the drum and showing the against steam issuing from the ends of the tubes and stays in elevation. Fig.2 is a front tubes, While the steam will more readily sepelevation of the boiler, partly in vertical secarate from the liquid body. The front header 80 tion, through the front plate. being relatively thin and the open ends of In the drawings, 3 represents the steam and the tubes close to the hand-holes in the front Water drum, of cylindrical outline and horiplate, they may be readily cleaned. zontal arrangement. It is obvious that my invention might be *1 represents the water-space of the front embodied in modified constructions, but the 85 header, and 5 the water-space of the back essential feature is the provision of headers header. These headers are made of wroughtof unequal capacity, the front header servsteel plates, the front header having the pering to contain the relatively thin body of waforated front plate 6, with flanged neck 7, and ter, While the rear header contains the larger an inner plate 8, perforated to receive the body, adequate to supply the tubes under all 90 tubes" 9. Said plates 6 and 8 have rivetconditions of firing. flanges turned outwardly Where they join the I claim-- Walls of the drum and their proximate mar- 1. A steam-boiler comprising in combina gins turned inwardly and abutted, the joint tionahorizontally-arranged cylindrical drum,

being covered by the band or shell 10, riveted headers having contracted necks connecting 5 to the inturned margins. The water-tubes with the drum by a single inlet, the transare arranged in parallel horizontal rows and verse diameters of said headers being short staggered vertical rows, and the front plate as compared with their Width and the front 4 6 is provided with a series of hand-holes 11, header being of less transverse diameter or one for each tube, each hand-hole being prodepth than the rear header and containing in :00

10 drum, inclined water-tubes connecting the water-space of said headers, and said front header being of less transverse diameter or depth than the rear header, and the front plate of said header being provided with handholes opposite the open ends of the water- 15 tubes substantially as described.

LUDYVIG BAKER. lVitnesses:

W. J. WIoKEs, H. G. ADAMS. 

